Pump.



No. 66l,938.

(,No Model.)

J. M. MORRIS.

PUMP.

Patented N'ov. I3, |900.

(Application filed Apr. 11, 1900.)

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No. 661,938. Pafnted Nov. ls, |900.

J. M. MORRIS.

PUMP.

(Applieatio M ed Apr. 11, 1900.) (No Model.) 2 Sheets--Sheet 2.

UNiTnn STaTns FATENT Ormes.,

JOSHUA M. MORRIS, OF ROCHESTER, NEW YORK2 ASSIGNOR OF ONE-HALF TO JOHN OASARIETTI, OF SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 661,938, dated November 13, 1900.

Application filed April 11, 1900. Serial No. 12,442. (No model.)

To aZZ whom, t may con/cern.-

Be it known that I, JOSHUA M. Monats, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Pumps; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to 1o the reference-numerals marked thereon.

My present invention relates to pumps particularly adapted for pumping heavy liquids-such, for instance, as asphaltum or tar-in which the valve mechanism is positively actuated and is of such a nature that it is practically impossible for it to clog or become stopped, and thus interfere with the operation, and there can be no back pressure exerted on the valve or valves to in any man- 2o ner interfere with the operation ofthe pump.

The invention further consists in certain improvements and combination of parts, all as will be hereinafter fully described, the novel features being pointed out in the claims z 5 at the end of this specification.

In the drawings, Figure 1 is a plan View of a pump constructed in accordance with my invention; Fig. 2, a vertical sectional view on the line @c a: of Fig. 1; Fig. 3, a cross-sectional view on the line @j y of Fig. 1.

Similar reference-numerals in the several figures indicate similar parts.

In the present embodiment of my invention I have shown two of the pu mps connected for simultaneous operation in opposite directions, thereby supplying a continuous stream of the heavy liquid, and this form I prefer for obvious reasons, although, as will be explained, a single cylinder can be used.

4o The principal or basic feature of the invention involves a movable abutment operated by the movable partin the present instance the pump-cylinder-and controlling the inlet and exit ports, and in the two-cylinder or double-acting pump the connection between these abutments or movable parts is such as to insure by the positive operation of one of them-say bythe compression of the fluid or material in the cylinder-the positive open- 5o ing or change ofthe valves controlling the other cylinder.

In carrying out my invention and in order to increase the capacity of the pump I employ a compound double-acting pump, the two movable cylinders (indicated by 1 and 11) 55 having the top plates 2 and 2l, provided with upwardly-extending arms 3 and 31, between which are hung links 4 and 41, connected at their upper ends to the cylinders and at their lower ends to the operating-lever or cross-bar 6o 5, pivoted between its ends at 6 to a suitable support 7. The cylinders 1 and 11 operate over the upper ends of the abutments or pistons 8 and 81, which are hollow or cylindrical and provided near their upper portions with suitable packing 9 91, cooperating with the insides of the cylinders 1 and 11. The abutments or pistons 9 91 are preferably provided at their upper ends with cross-bars 10 101, by which the pistons can be lifted when desired, 7o and also forming centers for'turning them in a lathe, and their lower ends are preferably provided with hollow cylindrical extensions 111 211, having the lateral ports or apertures 12 121, and the extreme lower ends are closed and provided with stop-rings 13. The extensions 111 and 211 pass through and lit liquid-tight in apertures formed in a casing 20, the latter being provided with a septum or diaphragm 14,

v dividing it into the upper chamber 15 and the 8c lower chamber 16, the former constituting a supply-chamber for the liquid entering it through a chamber and pipe 18 and the latter constituting an exit or discharge chamber with which the discharge-pipe 19 communi- 85 cates. As the pump described is particularly adapted for heavy materials, such as asphaltum or tar, the chamber 20 is inclosed within the casing 210, in which steam may be circulated, entering and passing out 9o through the pipes 22, as shown. The pistons or abutments 8 81 are connected bythe levers 23, pivoted at 24 on the main frame or chamber 17, so as to cause their movements in opposite directions, the connection in this respect not differing materially from that between the movable cylinders 1 and 11.

The object of making the pistons hollow, as shown, is to provide for containinga sufcient quantity of material without having its roo level extend above or come in contact with the packing between the cylinder and pis-l ton, and this will also leave anair-cushion in each cylinder, which is useful in pumping some classes of liquids.

From the above description the operation of the device will now be understood.

The pipe 18 being connected to the reservoir for the material to be pumped and the pipe 19 constituting the discharge, we will assume the cylindrical piston S to be filled with the liquid not quite to the level of the packing and the parts to be in the position shown in Fig. 2, and when the operating-lever is moved so as to carry the cylinder 1 downward the compression of the liquid will force the piston or abutment 8 downward to a position corresponding to that of the piston 81, thereby bringing the apertures or ports 12 i'nto communication with the discharge-chamber 16, and the contents of the cylinder will then be forced into the latter chamber and out through the exit-pipe 19. At the same time that the piston 8 moves downward the piston S1 is moved upward through the medium of the levers 23 and also by reason of the suction exerted by the upward movement of the cylinder 11, so that the ports 121 therein will be in communication with the inlet-chamber 15, thereby drawing the liquid from the latter into the cylinder 11 and the hollow piston 81. When the extreme of movement of the cylinders 1 and 11 and pistons S and 8l is reached, the reverse movement will cause the shifting of the valves and the establishment of communication between the cylinder 1 and the inlet-port and the cylinder 11 and the outlet port or passage, as will be understood.

The pump as a whole is composed of very few parts, which do not require particularly accurate iitting excepting between the cylinders 1 and 11 and their pistons and also between the cylindrical extensions 111 211 and the apertures or ports formed through the chamber 20; but as the connection between the pistons and cylinders may be packed with ordinary packing-rings or any other suitable form of packing and the joints between the extensions and the chamber 20 are preferably ground the joints are tight enough for all practical purposes, particularly for pumping heavy materials, such as tar and asphaltum, for which the pump is particularly used. As before stated, one of the cylinders and pistons can be used alone asa combined lift and force pump; but I prefer 'the double arrangement shown, as the stream thrown will be practically continuous.

In the present embodiment I provide at the ends of the chambers 15 and 16 in the casing 20 suitable apertures closed by caps or plugs 25, through which a cleaning instrument can be passed to clean or scrape the interior. Although the cylinders may be guided in their vertical movement by any suitable means, I prefer to have upon their outer sides concave lugs or arms 26, cooperating and sliding upon standards 27, secured to the base-plate 28, which forms the upper portion of the steam jacket or covering.

While I prefer the4 arrangement shown, in which the cylinders move over the ends of the parts whichI have termed pistons, and, as stat-ed, prefer this, as it simplifies construction, saves the packing, and covers the parts, I do not desire to confine my invention to such an arrangement, as practically the saine results in operation could be obtained if the parts termed cylinders operated inside instead of outside ofthe lower members or pistons.

I claim as my invention K 1. In a pump, the combination with a base having inlet and exhaust ports, of a cylinder movable relative the base, and a hollow piston, movable in the cylinder. and base having a port arranged exterior of the cylinder adapted to coperate alternately with the ports in base when the said cylinder is moved toward 0r from the latter.

2. In a pump, the combination with a base having inlet and exhaust passages, of a hollow piston movable in the base, provided with a port adapted to coperate alternately with the ports in the base and having the open end extending upon the exterior of the base, and a cylinder inclosing said end and movable thereon relatively to the base to shift the piston and alternately draw in and discharge the liquid therefrom.

3. In a pump, the combination with the cylinder and the recessed piston arranged within the latter, open upon one end and communicating with the cylinder and having the port, of the casing provided with the inlet and exhaust ports and in which one end of the piston operates, the port in the piston cooperating with the inlet and exhaust ports when the cylinder is operated toward or from said ports to cause a relative movement of the piston in the same direction.

4. In a pump, the combination with two cylinders and two corresponding pistons, each cylinder being movable relative to its piston and the pistons and the cylinders being connected for movement in opposite directions, and valve devices for each cylinder operated positively in opposite directions by pressure of the fluid in the cylinders.

5. In a pump, the combination with the two cylinders connected for movement in opposite directions, two pistons connected for movement in opposite directions, valve devices operated positively by the movement of the pistons, and inlet and exhaust ports controlled by said valve devices.

6. In a pump, the combination with the two cylinders connected for move ment in opposite directions, two pistons connected for movement in opposite directions, each of said pistons having a port therein communicating with the interior of the cylinder, of a stationary part having inlet and exhaust ports with IDO IIO

which the ports in the pistons communicate alternately.

7. In a pump, the Combination with the two connected cylinders and two connected pistons, said pistons and Cylinders being relatively movable to draw and expel Huid from between them, of a stationary part in which the pistons operate having inlet and exhaust ports, said pistons having ports communicating with the interior of the cylinders and adapted to cooperate alternately with the ports in the stationary part.

8. In a pump, the combination with the stationary base having the cylindrical aperture and the inlet and exhaust ports therein, and the movable cylinder of the relatively movable piston arranged Within the cylinder, one end of which is movable in the base and provided with a port' communicating with the interior of the cylinder and adapted to coperate with the ports in the base alternately as the cylinder is moved on the piston toward and from said ports.

9. In a pump, the combination with the base having the passage through it and the inlet and exhaust ports, of the relatively movable cylinder and piston, one of said parts having the cylindrical extension, the stop thereon, and the valve-'port in the extension adapted to connect with the inlet and exhaust ports alternately.

lO. The combination with the cylinder, the recessed piston therein having the Cylindrical extension at the lower end and the port therein, of the stationary base having the aperture and the inlet and exhaust ports with which the port on the piston ooperates.

ll. The combination with the two movable Cylinders and connections between them, the two movable recessed pistons, and connections between them, said pistons having the extensions provided with the ports, of the base-plate having the apertures and the inlet and exhaust ports with which the extensions on the pistons cooperate.

JOSHUA M. MORRIS.

Witnesses:

JOHN CASARIETTI, G.W1LLARD RICH. 

